如何用C语言写snake

# include & ltconio.h & gt# include & ltgraphics.h & gt# include & lttime.h & gt# include & ltstring.h & gt# include & ltmalloc.h & gt# include & ltstdio.h & gtint等级=5，点数=0，生命= 3；void set()，menu()，move_head()，move_body()，move()，init _昆虫()，left()，upon()，right()，down()，init_graph()，food_f()，ahead()，crate()；结构错误{ int x；int y；struct bug * laststruct bug * next};struct FD { int x；int y；int judge}food={0，0，0 }；struct bug *head_f=NULL，*head_l，*p1=NULL，* p2 = NULLvoid main(){ char ch；initgraph(800，600)；set()；init _昆虫()；while(1){ food _ f()；睡眠(等级* 10)；setcolor(黑色)；圆形(head _ l-& gt；x，head _ l-& gt；y，2)；setcolor(白色)；move _ body()；if(kb hit()){ ch = getch()；if(ch = = 27){ ahead()；set()；} else if(ch = =-32){ switch(getch()){ case 72:upon()；打破；案例80:down()；打破；案例75:左()；打破；案例77:右()；打破；} } else ahead()。} else { ahead()；} if(head _ f-& gt；x==food。& amphead _ f-& gt；y = = food . y){ Sleep(100)；crate()；food . judge = 0；point=point+(6级)* 10；if(food . x & lt；30 | | food.y & lt30 | | food.x & gt570 | | food.y & gt570)life++；menu()；} if(head _ f-& gt；x & lt5 | | head _ f-& gt；x & gt595 | | head _ f->；y & lt5 | | head _ f-& gt；y & gt595) {睡眠(1000)；生活-；food . judge = 0；init_graph()。init _昆虫()；menu()；} for(p 1 = head _ f-& gt；接下来；p1！= NULLp 1 = p 1->；next){ if(head _ f-& gt；x = = p 1->；x & amp& amphead _ f-& gt；y = = p 1-& gt；y){ Sleep(1000)；生活-；food . judge = 0；init_graph()。init _昆虫()；menu()；打破；}} If (life = = 0) {Outtextxy (280，300，“游戏结束！”);getch()；返回；} move()；};} void init _ graph(){ clear viewport()；setlinestyle(PS_SOLID，1，5)；矩形(2，2600，598)；setlinestyle(PS_SOLID，1，1)；} void set(){ init _ graph()；Outtextxy(640，50，“1，start/return”)；Outtextxy(640，70，" 2，exit ")；Outtextxy(640，90，“3，难度”)；Outtextxy (640，110，" 4，重新开始")；switch(getch()){ case ' 1 ':menu()；setcolor(绿色)；circle(food.x，food.y，2)；setcolor(白色)；返回；案例“2”:出口(0)；打破；案例' 3': outtextxy(700，90，":1 2 3 4 5 ")；grade = getch()-48；set()；打破；案例“4”:food . judge = 0，grade = 5；点= 0；生命= 3；init _昆虫()；menu()；打破；默认值:outtextxy(250，300，"输入错误！");set()；打破；}} Voidmenu () {charstr [20]，STR1 [] = { "分数:" }，str2[]={ "难度:" }，str3[]={ "健康:" }；init_graph()。sprintf(str，" %d "，point)；strcat(str1，str)；outtextxy(640，50，str 1)；sprintf(str，" %d "，grade)；strcat(str2，str)；outtextxy(640，70，str 2)；sprintf(str，" %d "，life)；strcat(str3，str)；outtextxy(640，90，str 3)；Outtextxy(640，110，"设置:ESC ")；} void init _昆虫(){ head _ f =(struct bug *)malloc(sizeof(struct bug))；head _ f-& gt；last = NULLhead _ f-& gt；x = 300head _ f-& gt；y = 300p2 = head _ f-& gt；next=p1=(结构bug *)malloc(sizeof(结构bug))；p 1->；last = head _ f；p 1->；x = 295p 1->；y = 300p 1 = p 1->；next=(结构bug *)malloc(sizeof(结构bug))；p 1->；next = NULLp 1->；x = 290p 1->；y = 300p 1->；last = p2head _ l = p 1；} void move(){ for(p 1 = head _ f；p1！= NULLp 1 = p 1->；下一步){ circle(p 1->；x，p 1->；y，2)；} } void move _ head(){ } void move _ body(){ for(p 1 = head _ l，p2 = p 1-& gt；最后；p2！= NULLp1=p2，p2 = p2-& gt；last){ p 1->；x = p2-& gt；x；p 1->；y = p2-& gt；y；} } void ahead(){ p 1 = head _ f；p2 = p 1->；接下来；p2 = p2-& gt；接下来；if(p 1->；x = = p2-& gt；x){ if(p 1->；y & gtp2->；y)head _ f-& gt；y+= 5；else head _ f-& gt；y-= 5；} else { if(p 1-& gt；x & gtp2->；x){ head _ f-& gt；x+= 5；} else head _ f-& gt；x-= 5；} } void on(){ p 1 = head _ f-& gt；接下来；p 1 = p 1->；接下来；head _ f-& gt；y-= 5；if(p 1->；x = = head _ f-& gt；x & amp& ampp 1->；y = = head _ f-& gt；y){ head _ f-& gt；y+= 5；前方()；} } void down(){ p 1 = head _ f-& gt；接下来；p 1 = p 1->；接下来；head _ f-& gt；y+= 5；if(p 1->；x = = head _ f-& gt；x & amp& ampp 1->；y = = head _ f-& gt；y){ head _ f-& gt；y-= 5；前方()；} } void left(){ p 1 = head _ f-& gt；接下来；p 1 = p 1->；接下来；head _ f-& gt；x-= 5；if(p 1->；x = = head _ f-& gt；x & amp& ampp 1->；y = = head _ f-& gt；y){ head _ f-& gt；x+= 5；前方()；} } void right(){ p 1 = head _ f-& gt；接下来；p 1 = p 1->；接下来；head _ f-& gt；x+= 5；if(p 1->；x = = head _ f-& gt；x & amp& ampp 1->；y = = head _ f-& gt；y){ head _ f-& gt；x-= 5；前方()；} } void food_f() { if(！food . judge){ food . x =(rand()% 117+1)* 5；food . y =(rand()% 117+1)* 5；food . judge = 1；if(food . x & lt；30 | | food.y & lt30 | | food.x & gt570 | | food.y & gt570) { setcolor(红色)；圆圈(f